Simultaneous Nadir Overpasses (SNOs) between GOES-15 and FY3D
TLE Epoch: 2020 10 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 10/07/2020   21:57:44   (   0.13,-128.42) (   0.51,-126.85)  179.44                80
 10/09/2020   10:19:12   (  -0.13,-128.43) (   0.70,-132.03)  410.51                80
 10/10/2020   10:02:56   (  -0.14,-128.43) (  -0.33,-127.45)  110.96                80
 10/11/2020   22:24:34   (   0.13,-128.40) (  -0.85,-132.67)  487.84                80
 10/12/2020   22:02:58   (   0.14,-128.39) (   0.18,-128.09)   33.25                80
 10/15/2020   10:05:31   (  -0.14,-128.38) (  -0.07,-128.70)   37.00                80
 10/16/2020   09:49:14   (  -0.14,-128.37) (  -1.09,-124.12)  483.88                80
 10/17/2020   22:10:52   (   0.13,-128.33) (  -0.08,-129.35)  115.53                80
 10/18/2020   21:49:16   (   0.14,-128.31) (   0.95,-124.77)  404.73                80
 10/20/2020   10:13:24   (  -0.13,-128.30) (   0.25,-129.94)  187.69                80